Alumina is a fairly chemically inert and white chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide. It may also be called aloxide, aloxite, or alundum depending on particular forms or applications. Used as filler in plastic and cosmetics, as a catalyst. Corundum used as an abrasive is considered and industrial mineral.aluminium oxideAlum02.04.05.01aluminahttp://en.wikipedia.org/wiki/Alumina